Window-ventilator.



. P. BAAR.

WINDOW VENTILATOR. APPLICATION FILED MAR. 4. 1915.

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PETER BAAR, OF CHICAGO, ILLINOIS.

WINDOW-VENTILATOR.

Masala.

Application filed March 4l, 1915.

To all '2p/wm it may concern Be 'if known that l. lix'rsn linnn, a citizen of the l'nited States. residing at Chicago, in the county of Cook and State ot Illinois, Ahave invented a certain new and useful Improvement in Window-Yehtilators of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings. formingr a part ot' this specification.

My invention relates to ventilators and is particularly concerned with such devices which are adapted to he employed in connection with windows wherein vertically movable sashes are employed. Itis the object of my invention to provide a simple and effective device whereby vitiated air may` pass from a room and be effectively replaced by fresh air from the outside atmosphere.

In accordance with the underlying theory ot my invention, I provide a device adapted, in a sense, to cover a window' opening, at the top of the window frame, this device having an outlet opening for vitiated air and an inlet opening,r for fresh air, the vitiated air passingr outwardly at the top of the window opening and the Jfresh air entering at the bottom oi the window opening. ln other words, due to the conformation and disposition of the ventilator devicev of my invention, l provide for the passage of air in two directions through the window opening, passing outwardly at the upper portion thcreoiu and inwardly :it the lower portion thereof. This window openingbeingl preferably at the top otthe sash, as hereinbefore explained` re is a complete avoidance of dra'lit whi iight be injurious and the proper position oi the outlet passage, for the purposes of the expiilsionof the vitiated air. is secured. Furthermore, the structure of my invention is such as to prevent the entry of rain or snow through the Window openingr and at the same time is such as to have little, of li ght.

My invention is illustrated in the accompanying drawings in which-- Figure 1 is a liront elevational View of the device of my invention, parts being broken away to further illustrate the structure thereof".

Fig. 2 is a cross-sectional view taken on the plane of the. line Q, 2, of Figa 'l 'and look- 'mg in the direction indicated by' the arrows,

if any, eltect upon the admission Specification of Letters Patent.

Patented lilly 17, 19M.

serial No. 11,971.

this cross-sectional view being drawn on a son'iewhat larger scale.

Fig. 3 is a cross-sectional view showing thedevice ot' my invention applied to a window.

Fig. l is an elevational view ot a modified form ot my invention. and

Fig. 5 is a cross-sectional view showing the application of said modlilied torni to a window'.

Referringlirst to'llig. il it will lie seen that the window frame (l is supported in the usual way in the wall 7. the sashes 8 and 9 being properly guided Jfor vertical movement 1n the trame by means of the strips 10, 11 and 19.. Since this structure is thoronghlywell known, no further description lis necessary.

The device ot my invention is primarily in the form of a canopy 13, presentinglr the vertical front wall l5. the inclined wall 16' and the horizontal wall 17. The under side of the canopy is open. as indicated at 15%. The inclined wall 16 is provided with an opening 19 in the form of a longitudinal slot, this opening being guarded by a baille plate 20 extending upwardly from the lower edge of the openingr 1f). As a matter ot' convenience in construction, this baille plate Q0 may well be stamped from the opening' 19 and then turned upwardly into the shape shown in Fig; 3. The particular structure of the canopy is thus illustrated inl Fig. 1 where it will be seen that it is of Pfr eneral telescoping structure so that it may be made tofityany window frame Within reasonable limits. This structure is as follows:

The main canopy portion which has just been described tits at each end into an end structure which has vertical inclined and horizontal Walls 15, 16a and 17a corresponding to the walls 15, 16 and 17 of the main part of the canopy. The lower end of the Wall 1521 and theinner end of the wall 17A are turned inwardly as illustrated at 20 and 21 respectively (Fig. 2) and it will be seen that with this structure the main portion of the. canopy can slide into thefend structures and fit snugly Withinthe inturned portions of the Wall.

The. end pieces, which have just been described, provide the end walls 22, 22, and in the preferred embodiment of my invention, illustrated in Figs. 1 2 and 3, these end walls arc provided with openings 23, 23,

through which ride down the incline and screws 24, 24, may b'e passed to secure the ventilator to the interior of the strips 10. In other words, this arrangement provides for the lit of the ventilator close to the top of the opening and secured to the inner faces of the strips 10. As shown in Fig. 3,.the upper sash is lowered to a point where the upper partrthereof is approximately on a line with the lower part of the canopy,l thus lprovidingl a considerable opening at the'top of the, Window frame. The vitiated air naturally hugs the ceiling of the room and also Tiugs hetop of any passage through which such vitiated air` may move. Consequently the vitiated air of the interior of the room, on the right side of Fig. 3, will pass outwardly through the opening-25 at the top thereof, as indicated by the arrow 26 and will pass upwardly and outwardly 'through the opening 19 and to the outside atmosphere as indicated by the arrow 27. At the same time, fresh air can enterthrough; the'open portion 18 of the canopy and willpass through the opening V25 at the bott'omrthereof as indicatedby the .arrow 28, tlnfssupplying the/interior of the room withffresh air.

ing 19 `and through rain .or snow wall .1,6v above the opening' 25. thatffalls upon the inclined the opening 1,9 will merely drop through the opening 19 to the sillfbelow.

It will befclea'r that in most window structures the air passing. through the opening 25 at the bottom thereof may be supplemented by air entering between the two sashes as illustrated by the arrows 29, 29.

' Irl '.Figs. 4 and 5 I illustrate amodiiied form.` l-ig'lh'is modification is concerned merely with tleattaohment of the ventilator to the windowframe. It will be seen that in these structures, I provide a face flange 3U extending laterally from the longer vertical the lower edge of said The baille 20 prevents lthe entry of., rain or snow through-the open- AnyA edge of the end walls 22, so that the canopy can be secured to the face of the strip l0, instead of the interior faces thereof, if dcsired. In this structure a longitudinal flange 31 is also provided.

I claim 'as new and desire to secure by Letters Patent:

LA window ventilator in the form of a canopy, having an inclined wall, said canopy being open at the bottom and at the back and said inclined wall being provided with an opening therein, and a baille extending upwardly from the lower edge of said opening leaving the opening uncovered, theI baille thus directing upwardly air currents coming in contact therewith.

y 2. In combination a window frame, avcano'py fitting within said frame `at the top thereof, said canopy being open at the bottom and at the back and having an opening in the front wall thereof, said openingT being guarded by a. baiile extending upwardly from opening, said opening being uncovered, the baiile thus directing upwardly air currents coming in contact therewith.

3. A ventilator in the fol-in of a canopy,

yhaving a vertical wall, an inclined wall, and a horizontal'wall,l end walls for said 031mm', 1n said inclined wall, and a an opening lng sald opening, sald baille eX- baile guar tendingV u the opening uncovered, the baille thus direct ing upwardly air currents coming in contact therewith, said canopy being s ecured over an pwardly from the lower edge of said opening, and so arranged as to leave opening in a window frame by securing said v end walls to' said window frame.

In witness whereof, I hereunto subscribe my name this ls day of March A. D. 1915. I PETER BAAR. Witnesses:

Lesmn W. Fnioim, ERNEST W. RAPALEE. 

